CN1560359A - High strength packing paper board by mixed fibre of bluish dogbane and sorghum stalks and preparation method thereof - Google Patents
High strength packing paper board by mixed fibre of bluish dogbane and sorghum stalks and preparation method thereof Download PDFInfo
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- CN1560359A CN1560359A CNA2004100211761A CN200410021176A CN1560359A CN 1560359 A CN1560359 A CN 1560359A CN A2004100211761 A CNA2004100211761 A CN A2004100211761A CN 200410021176 A CN200410021176 A CN 200410021176A CN 1560359 A CN1560359 A CN 1560359A
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- bluish dogbane
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Abstract
The invention belongs to a packing paperboard, specially relating to a bluish dogbane- sorghum stalk mixed fiber high-strength packaging paperboard and its preparing method, adopting the following raw materials in weight share: full-stalk bluish dogbane 1 share, sorghum stalks 1 shares, ammonium sulfite 0.3-0.4 share, magnesium oxide 0.03 share, where the liquor ratio is 1 : 2.5-3, and the rest water, cutting the full-stalk bluish dogbane and sorghum stalks into 20 mm-long segments, adding in water for predipping, placing in an evaporating ball or device at twice, deflating to a small extent to achieve the maximum filling quantity, cooking at 0.4Mpa-0.5Mpa at temperature 160-170 deg.C, where the cooking and heat-preserving time is 2-2.5 hours, reducing pressure and deflating, pouring in a bottom tank, making three-stage circulating wash, screening and milling, making paper, and the paperboard strength is largely improved, it can save large amount of timber, and beneficial to greening and environmental protection.
Description
Technical field
The invention belongs to packing board, particularly a kind of bluish dogbane, the high-strength packing board of jowar stalk blended fiber and preparation method thereof.
Technical background
At present, the packing board that China produces is a main raw material(s) with high-intensity wood all, as the needle pine etc.This wrapping paper mainly exists the cost height, consumes a large amount of high-strength timber.
Summary of the invention
The objective of the invention is to overcome above-mentioned technical deficiency, provide a kind of cost low, save high-quality timber, laterally the bluish dogbane that folding strength is high, the high-strength packing board of jowar stalk blended fiber and preparation method thereof.
The technical scheme that technical solution problem of the present invention is adopted is: raw material that this high-strength packing board adopted and proportioning thereof (weight meter): 1 part in full bar bluish dogbane, 1 part of jowar stalk, 0.3～0.4 part of ammonium sulfite, 0.03 part in magnesia, liquor ratio 1: 2.5～3, surplus is a water, its preparation method is cut into the segment of 20mm with full bar bluish dogbane and jowar stalk with hay cutter, adds the water preimpregnation and takes secondary to pack in rotary spherical digester or the evaporimeter, little venting, reach maximum tinning amount, the feeding ordinary production is carried out boiling with the air pressure of 0.4Mpa to 0.5Mpa, and temperature is at 160～170 ℃, boiling and temperature retention time are 2-2.5 hour, after the decompression venting is pressed, pour in the ball lower storage reservoir, carry out three sections circulation cleanings, screen mill is copied paper.
The invention has the beneficial effects as follows:
1, paper board strength improves greatly, and general the requirement is that horizontal folding strength is not less than 6 times, and cardboard of the present invention can reach more than 20 times, other technical indicator; All improve a lot than setting as tightness, burst index, horizontal ring crush index.
2, cost is low, and the raw materials used expense of finished product paper per ton reduces about 91 yuan than the paper that is raw material with full stalk bluish dogbane;
3, improved farmers' income, particularly to vast rural area, northeast, past jowar stalk economic worth is very low, is the main raw material of this cardboard now;
4, replace timber with bluish dogbane, jowar stalk, can save a large amount of timber, helped greening and environmental protection;
5, the production process of this invention is free from environmental pollution, and waste residue also can be as the cattle and sheep feed, and waste liquid can be made crops fertilizer, transformation salinity ground.
The specific embodiment
With most preferred embodiment the present invention is further described below: get 1 ton in full bar bluish dogbane, 1 ton of jowar stalk is cut into the segment of 20mm with hay cutter, add ammonium sulfite 300～400kg, magnesia 60Kg, liquor ratio 1: 2.5～3, surplus is a water, take secondary to pack in rotary spherical digester or the evaporimeter, little venting reaches maximum tinning amount, feed the air pressure of ordinary production with 0.4-0.5Mpa, temperature is carried out boiling and insulation 2-2.5h at 160～170 ℃, and the concrete time can decide according to the hardness of bluish dogbane and jowar stalk, few point of the time that hardness is little, long point of the time that hardness is big, after boiling is good, the decompression venting, pour in the ball lower storage reservoir, carry out three sections circulation cleanings, screen mill is copied paper.
The waste residue of the high-strength packing board that the present invention produces can be made the cattle and sheep feed, and waste residue can be made crops fertilizer, and production technology adopts recirculated water, and is pollution-free, does not have discharging.
The technical indicator of high-strength packing board of the present invention, see the following form:
| Index name | Unit | Setting | Become the paper measured value |
| Quantitatively | g/m 2 | 310 | 310 |
| Tightness is not less than | g/cm 2 | 0.65 | ＞0.70 |
| Burst index is not less than | KPA.m 2/g | 1.10 | ＞1.5 |
| (laterally) ring crush index is not less than | N/m.m 2/g (Kgf/0.152m.m 2/g | 5.2 | ＞6 |
| (laterally) folding strength is not less than | Inferior | 6 | ＞20 |
Claims (1)
1, a kind of bluish dogbane, high-strength packing board of jowar stalk blended fiber and preparation method thereof, the following raw material and the proportioning (weight meter) thereof that adopt: 1 part in full stalk bluish dogbane, 1 part of jowar stalk, 0.3～0.4 part of ammonium sulfite, 0.03 part in magnesia, liquor ratio 1: 2.5～3, surplus is a water, and full stalk bluish dogbane and jowar stalk are cut into the segment of 20mm with hay cutter, adds the water preimpregnation and takes secondary to pack in rotary spherical digester or the evaporimeter, little venting, reach maximum tinning amount, the feeding ordinary production is carried out boiling with the air pressure of 0.4Mpa～0.5Mpa, and temperature is at 160～170 ℃, boiling and temperature retention time are 2～2.5h, after the decompression venting is pressed, pour in the ball lower storage reservoir, carry out three sections circulation cleanings, screen mill is copied paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100211761A CN1560359A (en) | 2004-02-20 | 2004-02-20 | High strength packing paper board by mixed fibre of bluish dogbane and sorghum stalks and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100211761A CN1560359A (en) | 2004-02-20 | 2004-02-20 | High strength packing paper board by mixed fibre of bluish dogbane and sorghum stalks and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1560359A true CN1560359A (en) | 2005-01-05 |
Family
ID=34440804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100211761A Pending CN1560359A (en) | 2004-02-20 | 2004-02-20 | High strength packing paper board by mixed fibre of bluish dogbane and sorghum stalks and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1560359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368030A (en) * | 2016-09-19 | 2017-02-01 | 昆明理工大学 | Method for preparing food packaging paper through hemp core stalk total chloride-free bleached pulp |
-
2004
- 2004-02-20 CN CNA2004100211761A patent/CN1560359A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368030A (en) * | 2016-09-19 | 2017-02-01 | 昆明理工大学 | Method for preparing food packaging paper through hemp core stalk total chloride-free bleached pulp |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |